pointed at the tips, ovipositor protruding, compressed on its lower side 

 into a small groove. 



Harmonia has an unusually large head, with very long pal[)i. Anten- 

 nae slightly thickened toward the apex, with a double row of very fine 

 serrations. Abdomen long and narrow, the four posterior segments with 

 lateral, broadly-spreading, fan-shaped scales. Caudal tuft unusually long 

 and broad, divided in the centre and spreadiug. Fore tibix' flattened. 

 Primaries opaque. The structure of the tongue is not mentiuncd, nor 

 whether or not there is a brush of hair at tip of antenna.-. 



Podoscsia is principally distinguished by its unusually long hind legs. 

 The antennae of the (^ with ciliate lamellae, in the y Tnore slender than 

 in Sciapteron. The primaries are opaque save for a small transparent 

 space at base. The tongue is strong, corneous. 



AUmna is closely allied to Sesia but differs as follows : the head 

 is much narrower than the front of thiirax, which is not so far produced 

 beyond the base of the wings. The antennae are comparatively shorter, 

 stouter, and more thickened toward the li{). Legs proportionately shorter, 

 the tibia? more densely clothed with hair. Abdomen of the (^ never con- 

 stricted at base, stout, cylindrical, the candal tuft small and not spread- 

 ing. That of the Q is fusiform, quite as broad at base as the thorax, 

 and tapering to a point. The genus contains rather large species. 



Saunina has the tongue almost absoletc. Antennre filiform, simple, 

 rather slender, acuminated at the tip, nearly twice the length of the 

 thorax. Legs slender, hind tibitt long and stout, somewhat pilose. Wings 

 narrow, opaque. 



Sesia contains small or medium sized species, with antennte slightly 

 thickened externally and with a brush of hair at tip : in the male with 

 lateral brushes of hair but no lamellae, longer and more slender than the 

 preceding genera. Tongue strong, corneous, anal brush more or less 

 compacted, not spread fan-like. Primaries with two or three vitreous 

 spaces, secondaries entirely vitreous. The greater number of our species 

 are referred to this genus and in the European fauna it contains the 

 larger proportion of the species. 



Pvrr/iofa'iiia has the antennae brush-like, heavy, lengthily pilose. 

 Eyes banded, black and golden. Ocelli large. Head narrow, prominent. 

 Tongue moderate. Primaries narrow, widening terminally at outer third, 

 opaque. 



Carmcnfa has the fore wings quite opaque. Abdomen sessile and 

 tapering toward anal extremity. Antennae thickened toward extremity 

 as in Sesia proper. In many respects this genus approaches /'<?ra;;///;-6'«e, 

 but in that genus, while the anterior wings are opague, the antennce are 

 simple or ciliate. 



